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For the 5.4 million people who live in Russia’s permafrost zone, the new climate has disrupted their homes and their livelihoods. Rivers are rising and running faster, and entire neighborhoods are falling into them. Arable land for farming has plummeted by more than half, to just 120,000 acres in 2017.

As the permafrost thaws, animals and plants frozen for thousands of years begin to decompose and send a steady flow of carbon dioxide and other gases into the atmosphere — accelerating climate change.

Siberians who grew up learning to read nature’s subtlest signals are being driven to migrate by a climate they no longer understand.

This migration from the countryside to cities and towns — also driven by factors such as low investment and spotty Internet — represents one of the most significant and little-noticed movements to date of climate refugees. The city of Yakutsk has seen its population surge 20 percent to more than 300,000 in the past decade.

In Yakutia, an area one-third the size of the United States, cattle and reindeer herding have plunged 20 percent as the animals increasingly battle to survive the warming climate’s destruction of pastureland.

Winters, though still brutal, turned milder — and shorter. Fed by the more rapidly thawing permafrost, rivers started flooding more, leaving some communities inaccessible for months and washing others away, along with the ground beneath them.

a booming cottage industry in mammoth hunting has taken hold

ornithologists in the region have identified 48 new bird species in the past half century, an increase of almost 20 percent in the known diversity of bird life.

“It used to be man was in control,” said Pyotr Kaurgin, head of the Chukchi indigenous community in the village of Kolymskoye, on the northern reaches of the Kolyma River. “Now nature is in control.”

Formed during the late Pleistocene, the Earth’s last glacial period, which ended about 11,700 years ago, Yedoma consists of thick layers of soil packed around gigantic lodes of embedded ice. Because Yedoma contains so much ice, it can melt quickly — reshaping the landscape as sudden lakes form and hillsides collapse.

In the summer, huge blazes tore through Siberian boreal forests, unleashing yet more carbon into the atmosphere. Some scientists fear worsening northern fires are amplifying the permafrost damage.

on the Yamal Peninsula, monstrous craters have opened up in the tundra. Scientists suspect they represent sudden explosions of methane gas freed by thawing permafrost.

Due to thawing permafrost — along with the demise of Soviet-era state farms — the area of cultivated land in Yakutia has plummeted by more than half since 1990. The region’s cattle herds have shrunk by about 20 percent, to 188,100 head in 2017 from 233,300 in 2011. Reindeer herds have also declined sharply

he degradation of crop and pastureland caused by the thawing permafrost helped bring about the collapse of the region’s agriculture.

Yegor Prokopyev, the retired head of Nelemnoye, says climate change is the latest shock to befall the Kolyma River region. There was communism and forced collective farming. Then capitalism and government cutbacks.

. The radical transformation underway here, she said, should serve as a warning to people in every corner of the globe. “Changing our ways is imminent,” Crate said.

The town of Zyryanka has warmed by just over 2 degrees Celsius from 1966 to 2016, according to their analysis.

The Post’s analysis, which uses a data set from Berkeley Earth, looks further back. It shows that Zyryanka and the roughly 2,000-square-mile area surrounding it has warmed by more than 3 degrees Celsius when the past five years are compared with the mid- to late 1800s.

From 2005 to 2014, his team found, the number of days with below-freezing temperatures three feet below the surface fell from around 230 days a year to 190.

enormous wedges of ice lie under Yakutia.

“The permafrost is thawing so fast,” said Anna Liljedahl, an associate professor at the University of Alaska in Fairbanks. “We scientists can’t keep up anymore.”

In the 1970s, Desyatkin said, the ground in the Middle Kolyma District, just north of Zyryanka, thawed to a depth of about two feet every summer. Now it thaws to more than three feet. That extra foot of thawing means that, on average, every square mile of territory has been releasing an additional 700,000 gallons of water into the environment every year

Meanwhile, ancient plant and animal remains trapped inside the Yedoma are exposed to nonfreezing temperatures — or even the open air. That, in turn, activates microbes, which break down the remains and unleash carbon dioxide into the atmosphere, especially from the thawing plant material.

Scientists estimate that the Earth’s Yedoma regions contain between 327 billion and 466 billion tons of carbon. Were it all released into the atmosphere, that would amount to more than half of all human-caused emissions from greenhouse gases and deforestation between 1750 and 2011

As the permafrost thaws and riverbanks erode, more tusks will emerge. Though mammoths disappeared from the Siberian mainland some 10,000 years ago, the government estimates that 500,000 tons of their tusks are still buried in the frozen ground.

Supply and demand are so great that some people are collecting mammoth tusks at near-industrial scale. They use high-pressure hoses to blast away riverbanks and hire teams of young men to comb the wilderness for months at a time.

. In the glutted market, Sivtsev said, the price for top-quality tusks has fallen from about $500 a pound five years ago to around $180.

climate change is leaving people with few choices. “They have to somehow support and feed their families.”

The ducks and geese are just about gone, he said, possibly moving to new habitats in Siberia as the climate shifts. The sable pelts aren’t as thick as they used to be. The shorter winters mean that once reliably frozen-over lakes and rivers are now less predictable, making hunting grounds harder to reach and restricting his ability to get goods to market.

In Nelemnoye, the population has declined to 180 from 210 in the past decade, according to village head Andrei Solntsev. Just 82 of the residents have work. Many factors are pushing people to move to the city — lack of Internet access, poor flight connections, limited job opportunities — but the uncertainty born of a changing climate looms over everything

As the permafrost thaws and recedes, a handful of apartment buildings there are showing signs of structural problems. Sections of many older, wooden buildings already sag toward the ground — rendered uninhabitable by the unevenly thawing earth. New apartment blocks are being built on massive pylons extending ever deeper — more than 40 feet — below ground

a study published this year that the value of buildings and infrastructure on Russian permafrost amounts to $300 billion — about 7.5 percent of the nation’s total annual economic output. They estimate the cost of mitigating the damage wrought by thawing permafrost will probably total more than $100 billion by 2050.

Meanwhile, North America’s Pacific Coast was choking under successive waves of fume and ash. As with Australia, the forests, chaparral and grasslands of California, Oregon and Washington State had been rendered explosive by a chain of summers so searing that by mid-August this year, Death Valley’s temperature spiked to 130 degrees Fahrenheit — probably the hottest temperature ever recorded on earth.

So what are we to make of this yin-yang spectacle, with ourselves at nature’s throat in the south and nature at ours up north? Clearly a tremendous intercontinental drama is underway. Having sown the wind with greenhouse gases for centuries, we’re reaping the whirlwind, sometimes quite literally. Add pestilence to this picture of drought, fire and flood and you have a scene straight out of the Book of Revelation, with the coronavirus, as invisible to the naked eye as it is from space, playing the role of the fourth Horseman, sent by nature to counter our continuing assaults on the natural world.AdvertisementContinue reading the main story

Anaxagoras came to believe that the moon was a rock, not totally unlike the Earth, and he even described mountains on the lunar surface.

While Anaxagoras was not the first to realize that moonlight is reflected light from the sun, he was able to use this concept to correctly explain additional natural phenomena, such as eclipses and lunar phases.

Although many Greek philosophers of the sixth and fifth centuries B.C. believed in one or a few fundamental elements—such as water, air, fire and earth—Anaxagoras thought there must be an infinite number of elements.

He noted that when the moon is on the opposite side of the Earth than the sun, the full face is illuminated, “[producing] a model of the heavens that predicts not only phases of the moon, but how eclipses are possible.”

he philosopher also realized that the occasional darkening of the moon must result from the moon, sun and Earth lining up such that the moon passes into the Earth’s shadow—a lunar eclipse.

Anaxagoras also wrestled with the origins and formation of the moon, a mystery that still challenges scientists today.

Though his life was spared, the philosopher who questioned the divinity of the moon found himself in exile in Lampsacus at the edge of the Hellespont. But his ideas regarding eclipses and lunar phases would live on to this day, and for his recognition of the true nature of the moon, a lunar crater, visited by orbiting spacecraft some 2,400 years later, bears the name Anaxagoras.

The number of plants that have disappeared from the wild is more than twice the number of extinct birds, mammals and amphibians combined. The new figure is also four times the number of extinct plants recorded in the International Union for Conservation of Nature’s red list.

There are thousands of “living dead” plant species, where the last survivors have no chance of reproducing because, for example, only one sex remains or the big animals needed to spread their seeds are extinct.

ew species a year. A sixth mass extinction of life on Earth is under way, according to some scientists. A landmark report in May said human society was in jeopardy from the accelerating decline of the Earth’s natural life-support systems, with 1 million species of plants and animals at risk of extinction.

mong the other plants lost are the Chile sandalwood, exploited into oblivion for its aromatic wood, and the Saint Helena olive, the last two specimens of which succumbed to a termite attack and fungal infections in 2003.

“We suffer from plant blindness. Animals are cute, important and diverse but I am absolutely shocked how a similar level of awareness and interest is missing for plants. We take them for granted and I don’t think we should.”

I had other doubts, too. It seemed hubristic, or worse, to make multitrillion-dollar policy bets based on computer models trying to forecast climate patterns decades into the future. Climate activists kept promoting policies based on technologies that were either far from mature (solar energy) or sometimes actively harmful (biofuels).

Expensive efforts to curb greenhouse gas emissions in Europe and North America seemed particularly fruitless when China, India and other developing countries weren’t about to curb their own appetite for fossil fuels

just how fast is Greenland’s ice melting right now? Is this an emergency for our time, or is it a problem for the future?

His pitch was simple: The coastline we have taken for granted for thousands of years of human history changed rapidly in the past on account of natural forces — and would soon be changing rapidly and disastrously by man-made ones. A trip to Greenland, which holds one-eighth of the world’s ice on land (most of the rest is in Antarctica) would show me just how drastic those changes have been. Would I join him?

Greenland is about the size of Alaska and California combined and, except at its coasts, is covered by ice that in places is nearly two miles thick. Even that’s only a fraction of the ice in Antarctica, which is more than six times as large

Greenland’s ice also poses a nearer-term risk because it is melting faster. If all its ice were to melt, global sea levels would rise by some 24 feet. That would be more than enough to inundate hundreds of coastal cities in scores of nations, from Jakarta and Bangkok to Copenhagen and Amsterdam to Miami and New Orleans.

There was also a millenarian fervor that bothered me about climate activism, with its apocalyptic imagery (the Statue of Liberty underwater) and threats of doom unless we were willing to live far more frugally.

“We haven’t had a good positive mass balance year since the late 1990s,” he told me in a follow-on email when I asked him to explain the data for me. The losses can vary sharply by year. The annualized average over the past 30 years, he added, is 170 gigatons per year. That’s the equivalent of about 5,400 tons of ice loss per second. That “suggests that Greenland ice loss has been tracking the I.P.P.C. worse-case, highest-carbon-emission scenario.

The data shows unmistakably that Greenland’s ice is not in balance. It is losing far more than it is gaining.

scientists have been drilling ice-core samples from Greenland for decades, giving them a very good idea of climatic changes stretching back thousands of years. Better yet, a pair of satellites that detect anomalies in Earth’s gravity fields have been taking measurements of the sheet regularly for nearly 20 years, giving scientists a much more precise idea of what is happening.

it’s hard to forecast with any precision what that means. “Anyone who says they know what the sea level is going to be in 2100 is giving you an educated guess,” said NASA’s Willis. “The fact is, we’re seeing these big ice sheets melt for the first time in history, and we don’t really know how fast they can go.”

His own educated guess: “By 2100, we are probably looking at more than a foot or two and hopefully less than seven or eight feet. But we are struggling to figure out just how fast the ice sheets can melt. So the upper end of range is still not well known.”

On the face of it, that sounds manageable. Even if sea levels rise by eight feet, won’t the world have nearly 80 years to come to grips with the problem, during which technologies that help us mitigate the effects of climate change while adapting to its consequences are likely to make dramatic advances?

Won’t the world — including countries that today are poor — become far richer and thus more capable of weathering the floods, surges and superstorms?

The average rate at which sea level is rising around the world, he estimates, has more than tripled over the past three decades, to five millimeters a year from 1.5 millimeters. That may still seem minute, yet as the world learned during the pandemic, exponential increases have a way of hitting hard.

“When something is on a straight line or a smooth curve, you can plot its trajectory,” Englander said. “But sea level, like earthquakes and mudslides, is something that happens irregularly and can change rather quickly and surprise us. The point is, you can no longer predict the future by the recent past.”

In The Wall Street Journal’s editorial pages, where I used to work, the theoretical physicist Steven Koonin, a former under secretary for science in the Obama administration’s Energy Department, cast doubt on the threat from Thwaites in a voice that could have once been mine. He also thinks the risks associated with Greenland’s melting are less a product of human-induced global warming than of natural cycles in North Atlantic currents and temperatures, which over time have a way of regressing to the mean.

Even the poorest countries, while still unacceptably vulnerable, are suffering far fewer human and economic losses to climate-related disasters.

Another climate nonalarmist is Roger Pielke Jr., a professor of environmental studies at the University of Colorado Boulder. I call Pielke a nonalarmist rather than a skeptic because he readily acknowledges that the challenges associated with climate change, including sea-level rise, are real, serious and probably unstoppable, at least for many decades.

“If we have to have a problem,” he told me when I reached him by phone, “we probably want one with a slow onset that we can see coming. It’s not like an asteroid coming from space.”

“Since the 1940s, the impact of floods as a proportion of U.S. gross domestic product has dropped by 70 percent-plus,” Pielke said. “We see this around the world, across phenomena. The story is that fewer people are dying and we are having less damage proportional to G.D.P.”

“Much climate reporting today highlights short-term changes when they fit the narrative of a broken climate but then ignores or plays down changes when they don’t, often dismissing them as ‘just weather,’” he wrote in February.

Global warming is real and getting worse, Pielke said, yet still it’s possible that humanity will be able to adapt to, and compensate for, its effects.

A few years ago, I would have found voices like Koonin’s and Pielke’s persuasive. Now I’m less sure. What intervened was a pandemic.

That’s what I thought until the spring of 2020, when, along with everyone else, I experienced how swiftly and implacably nature can overwhelm even the richest and most technologically advanced societies. It was a lesson in the sort of intellectual humility I recommended for others

It was also a lesson in thinking about risk, especially those in the category known as high-impact, low-probability events that seem to be hitting us with such regularity in this century: the attacks of Sept. 11, 2001; the tsunamis of 2004 and 2011, the mass upheavals in the Arab world

What if the past does nothing to predict the future? What if climate risks do not evolve gradually and relatively predictably but instead suddenly soar uncontrollably? How much lead time is required to deal with something like sea-level rise? How do we weigh the risks of underreacting to climate change against the risks of overreacting to it?

I called Seth Klarman, one of the world’s most successful hedge-fund managers, to think through questions of risk. While he’s not an expert on climate change, he has spent decades thinking deeply about every manner of risk

And we will almost certainly have to do it from sources other than Russia, China, the Democratic Republic of Congo and other places that pose unacceptable strategic, environmental or humanitarian risks

“If you face something that is potentially existential,” he explained, “existential for nations, even for life as we know it, even if you thought the risk is, say, 5 percent, you’d want to hedge against it.”

“One thing we try to do,” he said, “is we buy protection when it’s really inexpensive, even when we think we may well not need it.” The forces contributing to climate change, he noted, echoing Englander, “might be irreversible sooner than the damage from climate change has become fully apparent. You can’t say it’s far off and wait when, if you had acted sooner, you might have dealt with it better and at less cost. We have to act now.”

In other words, an ounce of prevention is worth a pound of cure. That’s particularly true if climate change is akin to cancer — manageable or curable in its earlier stages, disastrous in its later ones.

As I’ve always believed, knowing there is grave risk to future generations — and expecting current ones to make immediate sacrifices for it — defies most of what we know about human nature. So I began to think more deeply about that challenge, and others.

For the world to achieve the net-zero goal for carbon dioxide emissions by 2050, according to the International Energy Agency, we will have to mine, by 2040, six times the current amounts of critical minerals — nickel, cobalt, copper, lithium, manganese, graphite, chromium, rare earths and other minerals and elements — needed for electric vehicles, wind turbines and solar panels.

The poster child for this kind of magical thinking is Germany, which undertook a historic Energiewende — “energy revolution” — only to come up short. At the turn of the century, Germany got about 85 percent of its primary energy from fossil fuels. Now it gets about 78 percent, a puny reduction, considering that the country has spent massive sums on renewables to increase the share of electricity it generates from them.

As in everything else in life, so too with the environment: There is no such thing as a free lunch. Whether it’s nuclear, biofuels, natural gas, hydroelectric or, yes, wind and solar, there will always be serious environmental downsides to any form of energy when used on a massive scale. A single industrial-size wind turbine, for instance, typically requires about a ton of rare earth metals as well as three metric tons of copper, which is notoriously destructive and dirty to mine.

no “clean energy” solution will easily liberate us from our overwhelming and, for now, inescapable dependence on fossil fuels.

Nobody brings the point home better than Vaclav Smil, the Canadian polymath whose most recent book, “How the World Really Works,” should be required reading for policymakers and anyone else interested in a serious discussion about potential climate solutions.

“I’ve talked to so many experts and seen so much evidence,” he told me over Zoom, “I’m convinced the climate is changing, and addressing climate change has become a philanthropic priority of mine.”

Things could turn a corner once scientists finally figure out a technical solution to the energy storage problem. Or when governments and local actors get over their NIMBYism when it comes to permitting and building a large energy grid to move electricity from Germany’s windy north to its energy-hungry south. Or when thoughtful environmental activists finally come to grips with the necessity of nuclear energy

Till then, even as I’ve come to accept the danger we face, I think it’s worth extending the cancer metaphor a little further: Just as cancer treatments, when they work at all, can have terrible side effects, much the same can be said of climate treatments: The gap between an accurate diagnosis and effective treatment remains dismayingly wide

Only when countries like Vietnam and China turned to a different model, of largely bottom-up, market-driven development, did hundreds of millions of people get lifted out of destitution.

the most important transformation has come in agriculture, which uses about 70 percent of the world’s freshwater supply.

Farmers gradually adopted sprinkler and drip irrigation systems, rather than more wasteful flood irrigation, not to conserve water but because the technology provided higher crop yields and larger profit margins.

Water shortages “will spur a revolutionary, aggressive approach to getting rid of flood irrigation,” said Seth Siegel, the chief sustainability officer of the Israeli AgTech company N-Drip. “Most of this innovation will be driven by free-market capitalism, with important incentives from government and NGOs.

meaningful environmental progress has been made through market forces. In this century, America’s carbon dioxide emissions across fuel types have fallen to well below 5,000 million metric tons per year, from a peak of about 6,000 million in 2007, even as our inflation-adjusted G.D.P. has grown by over 50 percent and total population by about 17 percent.

1) Engagement with critics is vital. Insults and stridency are never good tools of persuasion, and trying to cow or censor climate skeptics into silence rarely works

the biggest single driver in emissions reductions from 2005 to 2017 was the switch from coal to natural gas for power generation, since gas produces roughly half the carbon dioxide as coal. This, in turn, was the result of a fracking revolution in the past decade, fiercely resisted by many environmental activists, that made the United States the world’s largest gas producer.

In the long run, we are likelier to make progress when we adopt partial solutions that work with the grain of human nature, not big ones that work against it

Renewables, particularly wind power, played a role. So did efficiency mandates.

The problem with our civilization isn’t overconfidence. It’s polarization, paralysis and a profound lack of trust in all institutions, including the scientific one

Devising effective climate policies begins with recognizing the reality of the social and political landscape in which all policy operates. Some thoughts on how we might do better:

They may not be directly related to climate change but can nonetheless have a positive impact on it. And they probably won’t come in the form of One Big Idea but in thousands of little ones whose cumulative impacts add up.

2) Separate facts from predictions and predictions from policy. Global warming is a fact. So is the human contribution to it. So are observed increases in temperature and sea levels. So are continued increases if we continue to do more of the same. But the rate of those increases is difficult to predict even with the most sophisticated computer modeling

3) Don’t allow climate to become a mainly left-of-center concern. One reason the topic of climate has become so anathema to many conservatives is that so many of the proposed solutions have the flavor, and often the price tag, of old-fashioned statism

4) Be honest about the nature of the challenge. Talk of an imminent climate catastrophe is probably misleading, at least in the way most people understand “imminent.”

A more accurate description of the challenge might be a “potentially imminent tipping point,” meaning the worst consequences of climate change can still be far off but our ability to reverse them is drawing near. Again, the metaphor of cancer — never safe to ignore and always better to deal with at Stage 2 than at Stage 4 — can be helpful.

5) Be humble about the nature of the solutions. The larger the political and financial investment in a “big fix” response to climate change on the scale of the Energiewende, the greater the loss in time, capital and (crucially) public trust when it doesn’t work as planned

6) Begin solving problems our great-grandchildren will face. Start with sea-level rise

We can also stop providing incentives for building in flood-prone areas by raising the price of federal flood insurance to reflect the increased risk more accurately.

7) Stop viewing economic growth as a problem. Industrialization may be the leading cause of climate change. But we cannot and will not reverse it through some form of deindustrialization, which would send the world into poverty and deprivation

8) Get serious about the environmental trade-offs that come with clean energy. You cannot support wind farms but hinder the transmission lines needed to bring their power to the markets where they are needed.

9) A problem for the future is, by its very nature, a moral one. A conservative movement that claims to care about what we owe the future has the twin responsibility of setting an example for its children and at the same time preparing for that future.

These are not future problems, but rather urgent matters, according to Steffen, who said that the economic boom since 1950 and the globalized economy have accelerated the transgression of the boundaries.

why are young Icelanders so different from much of the rest of the world

"Secularization [in Iceland] has occurred very quickly, especially among younger people," said Bjarni Jonsson, the managing director of the Icelandic Ethical Humanist Association, an atheist nongovernmental organization. "With increased education and broad-mindedness, change can occur quickly."

 about 40 percent of the country's younger generation still consider themselves Christian -- but none of them believe that God created the Earth. "Theories of science are broadly accepted among both young and old. That does not necessarily affect people’s faith in God," she said.

the study has been widely discussed by Icelandic priests on Facebook. "As far as I have seen they are [neither] surprised nor [shocked by] the results. They see no necessary opposition between believing in God and accepting scientific theories on creation of the world."

40 percent of Icelanders thought that science and religion should both be used to analyze existential questions.

Most experts, however, would agree that the survey also indicates that the Evangelical Lutheran Church's influence is a rapidly diminishing in Iceland.

The discovery reinforced an idea that was emerging at the time: that there was not a single line of early humans, but multiple lineages. It was already known that three other species were living in Africa around the same time: H. habilis, H. erectus and Paranthropus boisei. H. rudolfensis added to this diversity.

Later finds from Koobi Fora suggest that the three Homo species coexisted between 1.78 and 1.98 million years ago.

H. erectus are thought to be our direct ancestors. They were the first hominins to migrate out of Africa, spreading into Europe and Asia.

but a 2013 study suggested that H. erectus had evolved the ability to throw.

This may have given H. erectus the drive they needed to become more social.There is some evidence that they shared information and worked in teams.

In the summer of 2015, researchers announced the discovery of the oldest known stone tools, dating to 3.3 million years ago. It had been assumed that only Homo species could make stone tools, but the tools were older than any known Homo fossils, suggesting that older species like A. afarensis or K. platyops could also make stone tools.

a 3.2-million-year-old fossil Australopithecus afarensis, nicknamed "Lucy". Lucy's species was immediately hailed as a key contender for our direct ancestor.

The earliest known Acheulean hand-axes were discovered near Lake Turkana in 2011. They are 1.76 million years old and were probably made by H. erectus.

sense.

Her team found fossils on the western shore of lake that demonstrated there was "diversity at the age of Lucy".

A. anamensis. This was the oldest species known from Lake Turkana, having lived about four million years ago.

another new species called Kenyanthropus platyopus, or "flat-faced man". This species lived 3.5 million years ago, when other members of Lucy's species also roamed.

"the common ancestor" of Homo, and largely killed off the idea that humans evolved on a single line.

There was a single lineage descending from apes through to Lucy, "and then out pops our immediate ancestors". To her, that did not make

There was thought to be a "substantial link between the emergence of humans (Homo) and the emergence of technology", says de la Torre, but it now seems this is not necessarily true.

Lake Turkana has played a pivotal role in our understanding of human evolution. But that is not to say the area was particularly significant for the early humans themselves.

Lake Turkana was simply an ideal place for fossils to be preserved, says Spoor. "That doesn't mean human evolution doesn't happen everywhere else in Africa."

It allows us to see multiple species that lived millions of years apart, and compare them.

When Thaddeus Stevens (Tommy Lee Jones) asks the president how he can reconcile so noble an aim with such malodorous methods, Lincoln recalls what his youthful years as a surveyor taught him: [A] compass . . . [will] point you true north from where you’re standing, but it’s got no advice about the swamps and deserts and chasms

Whether we approach reality from the top down or the bottom up, Tolstoy seems to be saying, an infinite number of possibilities exist at an indeterminate number of levels, all simultaneously. Some are predictable, most aren’t, and only dramatization—free from the scholar’s enslavement to theory and archives—can begin to represent them.

what is “training,” as Clausewitz understands it? It’s being able to draw upon principles extending across time and space, so that you’ll have a sense of what’s worked before and what hasn’t. You then apply these to the situation at hand: that’s the role of scale. The result is a plan, informed by the past, linked to the present, for achieving some future goal.

It’s worth remembering also that Lincoln—and Shakespeare—had a lifetime to become who they were. Young people today don’t, because society so sharply segregates general education, professional training, ascent within an organization, responsibility for it, and then retirement.

This worsens a problem Henry Kissinger identified long ago: that the “intellectual capital” leaders accumulate prior to reaching the top is all they’ll be able to draw on while at the top.37 There’s less time now than Lincoln had to learn anything new.

A gap has opened between the study of history and the construction of theory, both of which are needed if ends are to be aligned with means. Historians, knowing that their field rewards specialized research, tend to avoid the generalizations

Theorists, keen to be seen as social “scientists,” seek “reproducibility” in results: that replaces complexity with simplicity in the pursuit of predictability. Both communities neglect relationships between the general and the particular—between universal and local knowledge—that nurture strategic thinking.

Collaboration, in theory, could have secured the sea and the land from all future dangers. That would have required, though, the extension of trust, a quality with strikingly shallow roots in the character of all Greeks.

The only solution then is to improvise, but this is not just making it up as you go along. Maybe you’ll stick to the plan, maybe you’ll modify it, maybe you’ll scrap it altogether. Like Lincoln, though, you’ll know your compass heading, whatever the unknowns that lie between you and your destination. You’ll have in your mind a range of options for dealing with these, based—as if from Machiavelli—upon hard-won lessons from those who’ve gone before.

The past and future are no more equivalent, in Thucydides, than are capabilities and aspirations in strategy—they are, however, connected.

The past we can know only from imperfect sources, including our own memories. The future we can’t know, other than that it will originate in the past but then depart from it. Thucydides’ distinction between resemblance and reflection—between patterns surviving across time and repetitions degraded by time—aligns the asymmetry, for it suggests that the past prepares us for the future only when, however imperfectly, it transfers. Just as capabilities restrict aspirations to what circumstances will allow.

Insufficiency demands indirection, and that, Sun Tzu insists, requires maneuver: [W]hen capable, feign incapacity; when active, inactivity. When near, make it appear that you are far; when far away, that you are near. Offer an enemy a bait to lure him; feign disorder and strike him. . . . When he concentrates, prepare against him; where he is strong, avoid him. . . . Pretend inferiority and encourage his arrogance. . . . Keep him under a strain and wear him down. Opposites held in mind simultaneously, thus, are “the strategist’s keys to victory.”

it was Pericles who, more than anyone else, unleashed the Peloponnesian War—the unintended result of constructing a culture to support a strategy.

By the mid-450s Pericles, who agreed, had finished the walls around Athens and Piraeus, allowing total reliance on the sea in any future war. The new strategy made sense, but it made the Athenians, as Thucydides saw, a different people. Farmers, traditionally, had sustained Athens: their fields and vineyards supplied the city in peacetime, and their bodies filled the ranks of its infantry and cavalry when wars came. Now, though, their properties were expendable and their influence diminished.

If Athens were to rely upon the ardor of individuals, then it would have to inspire classes within the city and peoples throughout the empire—even as it retained the cohesiveness of its rival Sparta, still in many ways a small town.

Pericles used his “funeral oration,” delivered in Athens at the end of the Peloponnesian War’s first year, to explain what he hoped for. The dead had given their lives, he told the mourners, for the universality of Athenian distinctiveness: Athens imitated no one, but was a pattern for everyone. How, though, to reconcile these apparent opposites? Pericles’ solution was to connect scale, space, and time: Athenian culture would appeal to the city, the empire, and the ages.

The city had acquired its “friends,” Pericles acknowledged, by granting favors, “in order by continued kindness to keep the recipient in [its] debt; while the debtor [knows] that the return he makes will be a payment, not a free gift.” Nevertheless, the Athenians had provided these benefits “not from calculations of expediency, but in the confidence of liberality.” What he meant was that Athens would make its empire at once more powerful and more reassuring than that of any rival.

It could in this way project democracy across cultures because insecure states, fearing worse, would freely align with Athens.22 Self-interest would become comfort and then affinity.

The Athenians’ strategy of walling their cities, however, had reshaped their character, obliging them restlessly to roam the world. Because they had changed, they would have to change others—that’s what having an empire means—but how many, to what extent, and by what means? No one, not even Pericles, could easily say.

Equality, then, was the loop in Pericles’ logic. He saw both it and empire as admirable, but was slow to sense that encouraging one would diminish the other.

Like Lincoln, Pericles looked ahead to the ages. He even left them monuments and sent them messages. But he didn’t leave behind a functional state: it would take well over two millennia for democracy again to become a model with mass appeal.

as Thucydides grimly observes, war “brings most men’s character to a level with their fortunes.”

“Island” strategies require steady nerves. You have to be able to watch smoke rise on horizons you once controlled without losing your own self-confidence, or shaking that of allies, or strengthening that of adversaries.

For the abstractions of strategy and the emotions of strategists can never be separated: they can only be balanced. The weight attached to each, however, will vary with circumstances. And the heat of emotions requires only an instant to melt abstractions drawn from years of cool reflection.

if credibility is always in doubt, then capabilities must become infinite or bluffs must become routine. Neither approach is sustainable: that’s why walls exist in the first place.

he encouraged his readers to seek “knowledge of the past as an aid to the understanding of the future, which in the course of human things must resemble if it does not reflect it.” For without some sense of the past the future can be only loneliness: amnesia is a solitary affliction.

But to know the past only in static terms—as moments frozen in time and space—would be almost as disabling, because we’re the progeny of progressions across time and space that shift from small scales to big ones and back again. We know these through narratives, whether historical or fictional or a combination of both.

No one can anticipate everything that might happen. Sensing possibilities, though, is better than having no sense at all of what to expect. Sun Tzu seeks sense—even common sense—by tethering principles, which are few, to practices, which are many.

Clausewitz’s concept of training, however, retains its relevance. It’s the best protection we have against strategies getting stupider as they become grander, a recurring problem in peace as well as war. It’s the only way to combine the apparent opposites of planning and improvisation: to teach the common sense that comes from knowing when to be a hedgehog and when a fox.

Victories must connect: otherwise they won’t lead anywhere. They can’t be foreseen, though, because they arise from unforeseen opportunities. Maneuvering, thus, requires planning, but also improvisation. Small triumphs in a single arena set up larger ones elsewhere, allowing weaker contenders to become stronger.

The actions of man, Kennan concluded, “are governed not so much by what he intellectually believes as by what he vividly realizes.”

Nor is it clear, even now, whether Christianity caused Rome’s “fall”—as Gibbon believed—or—as the legacies of Augustus suggest—secured Rome’s institutional immortalities. These opposites have shaped “western” civilization ever since. Not least by giving rise to two truly grand strategies, parallel in their purposes but devised a thousand years apart

Augustine shows that reality always falls short of the ideal: one can strive toward it, but never expect to achieve it. Seeking, therefore, is the best man can manage in a fallen world, and what he seeks is his choice. Nevertheless, not all ends are legitimate; not all means are appropriate. Augustine seeks, therefore, to guide choice by respecting choice. He does this through an appeal to reason: one might even say to common sense.

A peaceful faith—the only source of justice for Christians—can’t flourish without protection, whether through toleration, as in pre-Constantine Rome, or by formal edict, as afterward.20 The City of God is a fragile structure within the sinful City of Man. It’s this that leads Christians to entrust authority to selected sinners—we call it “politics”—and Augustine, for all his piety, is a political philosopher.

Augustine concluded that war, if necessary to save the state, could be a lesser evil than peace—and that the procedural prerequisites for necessity could be stated. Had provocation occurred? Had competent authority exhausted peaceful alternatives? Would the resort to violence be a means chosen, not an end in itself? Was the expenditure of force proportionate to its purposes, so that it wouldn’t destroy what it was meant to defend?

No one before Augustine, however, had set standards to be met by states in choosing war. This could be done only within an inclusionary monotheism, for only a God claiming universal authority could judge the souls of earthly rulers. And only Augustine, in his era, spoke so self-confidently for Him. The

Augustine’s great uncertainty was the status of souls in the City of Man, for only the fittest could hope to enter the City of God. Pre-Christian deities had rarely made such distinctions: the pagan afterlife was equally grim for heroes, scoundrels, and all in between.25 Not so, though, with the Christian God: behavior in life would make a huge difference in death. It was vital, then, to fight wars within rules. The stakes could hardly be higher.

Alignment, in turn, implies interdependence. Justice is unattainable in the absence of order, peace may require the fighting of wars, Caesar must be propitiated—perhaps even, like Constantine, converted—if man is to reach God. Each capability brings an aspiration within reach, much as Sun Tzu’s practices tether his principles, but what’s the nature of the tether? I think it’s proportionality: the means employed must be appropriate to—or at least not corrupt—the end envisaged. This, then, is Augustine’s tilt: toward a logic of strategy transcending time, place, culture, circumstance, and the differences between saints and sinners.

a more revealing distinction may lie in temperament: to borrow from Milan Kundera,37 Machiavelli found “lightness of being” bearable. For Augustine—perhaps because traumatized as a youth by a pear tree—it was unendurable.

“I judge that it might be true that fortune is arbiter of half our actions, but also that she leaves the other half, or close to it, for us to govern.” Fifty percent fortune, fifty percent man—but zero percent God. Man is, however precariously, on his own.

States, Machiavelli suggests, operate similarly. If governed badly, men’s rapacity will soon overwhelm them, whether through internal rebellion or external war. But if run with virtù—his untranslatable term for planning without praying40—states can constrain, if not in all ways control, the workings of fortune, or chance. The skills needed are those of imitation, adaptation, and approximation.

Machiavelli commends the study of history, “for since men almost always walk on paths beaten by others and proceed in their actions by imitation . . . , a prudent man should always enter upon the paths beaten by great men, and imitate those who have been most excellent, so that if his own virtue does not reach that far, it is at least in the odor of it.”

What, then, to do? It helped that Machiavelli and Berlin had lightness of being, for their answer is the same: don’t sweat it. Learn to live with the contradictions. Machiavelli shows “no trace of agony,” Berlin points out, and he doesn’t either:

Eternal truths have little to do with any of this, beyond the assurance that circumstances will change. Machiavelli knows, as did Augustine, that what makes sense in one situation may not in the next. They differ, though, in that Machiavelli, expecting to go to Hell, doesn’t attempt to resolve such disparities. Augustine, hoping for Heaven, feels personally responsible for them. Despite his afflictions, Machiavelli often sees comedy.42 Despite his privileges, Augustine carries a tragic burden of guilt. Machiavelli sweats, but not all the time. Augustine never stops.

“Lightness of being,” then, is the ability, if not to find the good in bad things, then at least to remain afloat among them, perhaps to swim or to sail through them, possibly even to take precautions that can keep you dry. It’s not to locate logic in misfortunes, or to show that they’re for the best because they reflect God’s will.

Augustine and Machiavelli agree that wars should be fought—indeed that states should be run—by pre-specifiable procedures. Both know that aspirations aren’t capabilities. Both prefer to connect them through checklists, not commandments.43

Augustine admits, which is why good men may have to seek peace by shedding blood. The greater privilege, however, is to avert “that calamity which others are under the necessity of producing.” Machiavelli agrees, but notes that a prince so infrequently has this privilege that if he wishes to remain in power he must “learn to be able not to be good,” and to use this proficiency or not use it “according to necessity.”51 As fits man’s fallen state, Augustine sighs. As befits man, Machiavelli simplifies.

As Machiavelli’s finest translator has put it: “[J]ustice is no more reasonable than what a person’s prudence tells him he must acquire for himself, or must submit to, because men cannot afford justice in any sense that transcends their own preservation.”53

princes need advisers. The adviser can’t tell the prince what to do, but he can suggest what the prince should know. For Machiavelli this means seeking patterns—across time, space, and status—by shifting perspectives. “[J]ust as those who sketch landscapes place themselves down in the plain to consider the nature of mountains . . . and to consider the nature of low places place themselves high atop mountains,

Machiavelli embraces, then, a utilitarian morality: you proportion your actions to your objective, not to progress from one nebulous city to another, but because some things have been shown to work and others haven’t.60

Who, then, will oversee them? They’ll do it themselves, Machiavelli replies, by balancing power. First, there’ll be a balance among states, unlike older Roman and Catholic traditions of universality. Machiavelli anticipates the statecraft of Richelieu, Metternich, Bismarck,

But Machiavelli understands balancing in a second and subtler sense, conveyed more explicitly in The Discourses than in The Prince: [I]t is only in republics that the common good is looked to properly in that all that promotes it is carried out; and, however much this or that private person may be the loser on this account, there are so many who benefit thereby that the common good can be realized in spite of those few who suffer in consequence.64 This idea of an internal equilibrium within which competition strengthens community wouldn’t appear again until Adam Smith unveiled an “invisible hand” in The Wealth of Nations (1776), until the American Founding Fathers drafted and in The Federalist justified constitutional checks and balances (1787–88), and until Immanuel Kant linked republics, however distantly, with Perpetual Peace (1795).

Machiavelli’s great transgression, Berlin concluded, was to confirm what everyone knows but no one will admit: that ideals “cannot be attained.” Statecraft, therefore, can never balance realism against idealism: there are only competing realisms. There is no contest, in governing, between politics and morality: there is only politics. And no state respects Christian teaching on saving souls. The incompatibilities are irreconcilable. To deny this is, in Berlin’s words but in Machiavelli’s mind, to “vacillate, fall between two stools, and end in weakness and failure.”

And approximation? “[P]rudent archers,” Machiavelli points out, knowing the strength of their bow, “set their aim much higher than the place intended, not to reach such height with their arrow, but to be able with the aid of so high an aim to achieve their plan.”41 For there will be deflection—certainly from gravity, perhaps from wind, who knows from what else? And the target itself will probably be moving.

Augustine’s City of God no longer exists on earth. The City of Man, which survives, has no single path to salvation. “[T]he belief that the correct, objectively valid solution to the question of how men should live can in principle be discovered,” Berlin finds, “is itself in principle not true.” Machiavelli thus split open the rock “upon which Western beliefs and lives had been founded.” It was he “who lit the fatal fuse.”

Machiavelli’s blood ran colder than was ordinary: he praised Cesare Borgia, for example, and he refused to condemn torture despite having suffered it (Augustine, never tortured, took a similar position).75 Machiavelli was careful, however, to apportion enormities: they should only forestall greater horrors—violent revolution, defeat in war, descent into anarchy, mass killing, or what we would today call “genocide.”

Berlin sees in this an “economy of violence,” by which he means holding a “reserve of force always in the background to keep things going in such a way that the virtues admired by [Machiavelli] and by the classical thinkers to whom he appeals can be protected and allowed to flower.”76 It’s no accident that Berlin uses the plural. For it comes closer than the singular, in English, to Machiavelli’s virtù, implying no single standard by which men must live.

“[T]here are many different ends that men may seek and still be fully rational,” Berlin insists, “capable of understanding . . . and deriving light from each other.” Otherwise, civilizations would exist in “impenetrable bubble[s],” incomprehensible to anyone on the outside. “Intercommunication between cultures in time and space is possible only because what makes men human is common to them, and acts as a bridge between them. But our values are ours, and theirs are theirs.”

Perhaps there are other worlds in which all principles are harmonized, but “it is on earth that we live, and it is here that we must believe and act.”77 By shattering certainty, Machiavelli showed how. “[T]he dilemma has never given men peace since it came to light,” Berlin lightly concludes, “but we have learnt to live with it.”

Posterity has long regarded Augustine and Machiavelli as pivots in the history of “western” thought because each, with enduring effects, shifted long-standing relationships between souls and states.

Philip promises obedience to God, not his subjects. Elizabeth serves her subjects, fitting God to their interests. The king, looking to Heaven, venerates. The queen, feet on earth, calculates. The differences test the ideas of Augustine and Machiavelli against the demands of statecraft at the dawn of the modern age.

Relishing opposites, the queen was constant only in her patriotism, her insistence on keeping ends within means, and her determination—a requirement for pivoting—never to be pinned down.

Pivoting requires gyroscopes, and Elizabeth’s were the best of her era. She balanced purposefulness with imagination, guile, humor, timing, and an economy in movement that, however extravagant her display, kept her steady on the tightrope she walked.

Machiavelli, thinking gyroscopically, advised his prince to be a lion and a fox, the former to frighten wolves, the latter to detect snares. Elizabeth went him one better by being lion, fox, and female, a combination the crafty Italian might have learned to appreciate. Philip was a grand lion, but he was only a lion.

princes can through conscientiousness, Machiavelli warned, become trapped. For a wise ruler “cannot observe faith, nor should he, when such observance turns against him, and the causes that made him promise have been eliminated. . . . Nor does a prince ever lack legitimate causes to color his failure to observe faith.”46

What we like to recall as the Elizabethan “golden age” survived only through surveillance and terror: that was another of its contradictions, maintained regretfully with resignation.

The queen’s instincts were more humane than those of her predecessors, but too many contemporaries were trying to kill her. “Unlike her sister, Elizabeth never burned men for their faith,” her recent biographer Lisa Hilton has written. “She tortured and hanged them for treason.”60 Toleration, Machiavelli might have said, had turned against Elizabeth. She wanted to be loved—who wouldn’t? It was definitely safer for princes, though, to be feared.

“The failure of the Spanish Armada,” Geoffrey Parker has argued, “laid the American continent open to invasion and colonization by northern Europeans, and thus made possible the creation of the United States.” If that’s right, then the future pivoted on a single evening—August 7, 1588—owing to a favorable wind, a clever lord admiral, and a few fiery ships. Had he succeeded, Philip would have required Elizabeth to end all English voyages to America.4

In contrast to Spain’s “new world” colonies—and to the territories that France, more recently, had claimed (but barely settled) along the banks of the St. Lawrence, the Great Lakes, and the Ohio and Mississippi rivers—British America “was a society whose political and administrative institutions were more likely to evolve from below than to be imposed from above.”10 That made it a hodgepodge, but also a complex adaptive system.

The principles seem at odds—how can supremacies share?—but within that puzzle, the modern historian Robert Tombs has suggested, lay the foundations of England’s post-Stuart political culture: [S]uspicion of Utopias and zealots; trust in common sense and experience; respect for tradition; preference for gradual change; and the view that “compromise” is victory, not betrayal. These things stem from the failure of both royal absolutism and of godly republicanism: costly failures, and fruitful ones.

the areas first and most affected by climate change are the poorest regions of earth, we are talking about the least seen, least represented group on our planet.

That’s something humanity has never done before.

Pessimism would be an ethical catastrophe. It leads only to despair, despair to inaction, and inaction to a future world David Attenborough has described as “the collapse of our civilizations and the extinction of much of the natural world.”

we have to stay positive; it’s the only moral response to this crisis.

“We have all the tools we need, today, to stop it all: a carbon tax and the political apparatus to aggressively phase out dirty energy, a new approach to agricultural practices and a shift away from beef and dairy in the global diet; and public investment in green energy and carbon capture.”

Global emissions could be cut by a third if the richest 10 percent of humanity cut their use of energy to the same level as affluent, comfortable Europe.

Climate change is “not just the biggest threat human life on the planet has ever faced but a threat of an entirely different category and scale,”

Even if collective action manages to keep us to 2 degrees Celsius of warming — a target it looks like we are currently on course to miss — we would be facing a world in which “the ice sheets will begin their collapse, global G.D.P. per capita will be cut by 13 percent, 400 million more people will suffer from water scarcity, major cities in the equatorial band of the planet will become unlivable

We will see migration on a scale the world has never experienced: United Nations and World Bank estimates of how many people will be forcibly displaced by the middle of this century range from the tens to the hundreds of millions.

“this is our best case scenario.”

All of this will affect the world’s poor far more than the world’s rich.

We are facing a call to action that we are, on the evidence of our behavior so far, likely to ignore, unless we directly feel its urgency

The science of global warming has been settled for 40 years, but we have not just continued to pollute, we have accelerated the rate at which we’ve been doing so

“We have done as much damage to the fate of the planet and its ability to sustain human life and civilization since Al Gore published his first book on the climate than in all the centuries — all the millenniums — that came before.”

It’s not just that we know what’s happening, it’s that we’ve known for years and done nothing.

So why didn’t they?

Scientists struggled to put across a clear message with sufficient force

The effect of all this was that the fight against climate change lost momentum at a critical point.

The greater part of responsibility for the failure, however, lies with politicians and energy companies

With American leadership, Rich writes, “warming could have been held to less than 1.5 degrees.”

Climate change is a tragedy, but Rich makes clear that it is also a crime — a thing that bad people knowingly made worse, for their personal gain

posterity will find it hard to believe, and impossible to forgive.

it faces the same daunting task that confronted Carl Bosch a century ago: How much can it bring costs down? And how fast can it scale up

They believe that over the next seven years they can bring expenses down to a level that would enable them to sell CO₂ into more lucrative markets. Air-captured CO₂ can be combined with hydrogen and then fashioned into any kind of fossil-fuel substitute you want. Instead of making bread from air, you can make fuels from air.

What Gebald and Wurzbacher really want to do is to pull vast amounts of CO₂ out of the atmosphere and bury it, forever, deep underground, and sell that service as an offset

companies like Climeworks face a quandary: How do you sell something that never existed before, something that may never be cheap, into a market that is not yet real?

It’s arguably the case, in fact, that when it comes to reducing our carbon emissions, direct air capture will be seen as an option that’s too expensive and too modest in impact. “The only way that direct air capture becomes meaningful is if we do all the other things we need to do promptly,” Hal Harvey, a California energy analyst who studies climate-friendly technologies and policies, told me

In short, the best way to start making progress toward a decarbonized world is not to rev up millions of air capture machines right now. It’s to stop putting CO₂ in the atmosphere in the first place.

If the nations of the world were to continue on the current track, it would be impossible to meet the objectives of the 2016 Paris Agreement, which set a goal limiting warming to 2 degrees Celsius or, ideally, 1.5 degrees. And it would usher in a world of misery and economic hardship. Already, temperatures in some regions have climbed more than 1 degree Celsius, as a report by the Intergovernmental Panel on Climate Change noted last October. These temperature increases have led to an increase in droughts, heat waves, floods and biodiversity losses and make the chaos of 2 or 3 degrees’ additional warming seem inconceivable

A further problem is that maintaining today’s emissions path for too long runs the risk of doing irreparable damage to the earth’s ecosystems — causing harm that no amount of technological innovation can make right. “There is no reverse gear for natural systems,” Harvey says. “If they go, they go. If we defrost the tundra, it’s game over.” The same might be said for the Greenland and West Antarctic ice sheets, or our coral reefs. Such resources have an asymmetry in their natural architectures: They can take thousands or millions of years to form, but could reach conditions of catastrophic decline in just a few decades.

To have a shot at maintaining a climate suitable for humans, the world’s nations most likely have to reduce CO₂ emissions drastically from the current level — to perhaps 15 billion or 20 billion metric tons per year by 2030; then, through some kind of unprecedented political and industrial effort, we need to bring carbon emissions to zero by around 2050

To preserve a livable environment we may also need to extract CO₂ from the atmosphere. As Wurzbacher put it, “if you take all these numbers from the I.P.C.C., you end up with something like eight to 10 billion tons — gigatons — of CO₂ that need to be removed from the air every year, if we are serious about 1.5 or 2 degrees.

Through photosynthesis, our forests take extraordinary amounts of carbon dioxide from the atmosphere, and if we were to magnify efforts to reforest clear-cut areas — or plant new groves, a process known as afforestation — we could absorb billions more metric tons of carbon in future years.

we could grow crops specifically to absorb CO₂ and then burn them for power generation, with the intention of capturing the power-plant emissions and pumping them underground, a process known as bioenergy with carbon capture and storage, or BECCS

Ever since the Industrial Revolution, human societies have produced an excess of CO₂, by taking carbon stores from deep inside the earth — in the form of coal, oil and gas — and from stores aboveground (mostly wood), then putting it into the atmosphere by burning it. It has become imperative to reverse the process — that is, take CO₂ out of the air and either restore it deep inside the earth or contain it within new surface ecosystems.

“It’s not about saying, ‘I want to plant a tree.’ It’s about saying, ‘We want to plant a billion trees.’

“We have to come to grips with the fact that we waited too long and that we took some options off the table,” Michael Oppenheimer, a Princeton scientist who studies climate and policy, told me. As a result, NETs no longer seem to be just interesting ideas; they look like necessities. And as it happens, the Climeworks machines on the rooftop do the work each year of about 36,000 trees.

air capture could likewise help counter the impact of several vital industries. “There are process emissions that come from producing iron and steel, cement and glass,” she says, “and any time you make these materials, there’s a chemical reaction that emits CO₂.” Direct air capture could even lessen the impacts of the Haber-Bosch processes for making fertilizer; by some estimates, that industry now accounts for 3 percent of all CO₂ emissions.

Wind and solar are now the cheapest forms of energy in the right locations,” Pacala says. “The return on those investments, if you calculated it, would blow the doors off anything in your portfolio. It’s like investing in early Apple. So it’s a spectacular story of success. And direct air capture is precisely the same kind of problem, in which the only barrier is that it’s too costly.”

what all the founders have in common is a belief that the cost of capturing a ton of carbon will soon drop sharply.

M.I.T.’s Howard Herzog, for instance, an engineer who has spent years looking at the potential for these machines, told me that he thinks the costs will remain between $600 and $1,000 per metric ton

He points out that because direct-air-capture machines have to move tremendous amounts of air through a filter or solution to glean a ton of CO₂ — the gas, for all its global impact, makes up only about 0.04 percent of our atmosphere — the process necessitates large expenditures for energy and big equipment. What he has likewise observed, in analyzing similar industries that separate gases, suggests that translating spreadsheet projections for capturing CO₂ into real-world applications will reveal hidden costs. “I think there has been a lot of hype about this, and it’s not going to revolutionize anything,

Climeworks’s current goal is to remove 1 percent of the world’s annual CO₂ emissions by the mid 2020s.

“Basically, we have a road map — $600, down to $400, down to $300 and $200 a ton,” Wurzbacher said. “This is over the next five years. Down to $200 we know quite well what we’re doing.” And beyond $200, Wurzbacher suggested, things get murkier.

To actually capture 1 percent of the world’s carbon emissions by 2025 would, by Gebald’s calculations, require that Climeworks build 250,000 carbon-capture plants like the ones on the roof at Hinwil. That adds up to about 4.5 million carbon collectors

The Climeworks founders therefore try to think of their product as the automotive industry might — a piece of mass-produced technology and metal, not the carbon they hope to sequester.

“Every CO₂ collector has about the same weight and dimensions of a car — roughly two tons, and roughly 2 meters by 2 meters by 2 meters,” Gebald said. “And all the methods used to produce the CO₂ collectors could be well automated. So we have the automotive industry as a model for how to produce things in large quantities for low cost.

n 1954, the economist Paul Samuelson put forward a theory that made a distinction between “private-consumption goods” — bread, cars, houses and the like — and commodities that existed apart from the usual laws of supply and demand.

the other type of commodity Samuelson was describing is something now known as a “public good,” which benefits everyone but is not bought, sold or consumed the same way

direct air capture’s success would be limited to the size of the market for private goods — soda fizz, greenhouse gas — unless governments decided to intervene and help fund the equivalent of several million (or more) lighthouses.

An intervention could take a variety of forms. It could be large grants for research to find better sorbent materials, for instance, which would be similar to government investments that long ago helped nurture the solar- and wind-power industries. But help could also come by expanding regulations that already exist.

The Climeworks founders told me they don’t believe their company will succeed on what they call “climate impact” scales unless the world puts significant prices on emissions, in the form of a carbon tax or carbon fee.

“Our goal is to make it possible to capture CO₂ from the air for below $100 per ton,” Wurzbacher says. “No one owns a crystal ball, but we think — and we’re quite confident — that by something like 2030 we’ll have a global average price on carbon in the range of $100 to $150 a ton.” There is optimism in this thinking

A company that sells a product or uses a process that creates high emissions — an airline, for instance, or a steel maker — could be required to pay carbon-removal companies $100 per metric ton or more to offset their CO₂ output. Or a government might use carbon-tax proceeds to directly pay businesses to collect and bury CO₂.

“It doesn’t cost too much to pump CO₂ underground,” Stanford’s Sally Benson says. Companies already sequester about 34 million metric tons of CO₂ in the ground every year, at a number of sites around the world, usually to enhance the oil-drilling process. “The costs range from $2 to $15 per ton. So the bigger cost in all of this is the cost of carbon capture.”

The weekend before, Gutknecht told me, he received 900 unsolicited inquiries by email. Many were from potential customers who wanted to know how soon Climeworks could bury their CO₂ emissions, or how much a machine might cost them.

A Climeworks app could be installed on my smartphone, he explained. It could then be activated by my handset’s location services. “You fly over here to Europe,” he explained, “and the app tells you that you have just burned 1.7 tons of CO₂. Do you want to remove that? Well, Climeworks can remove it for you. Click here. We’ll charge your credit card.

The vast and constant market demand for fuel is why Carbon Engineering has staked its future on synthetics. The world currently burns about 100 million barrels of oil a day.

“So let’s say you’d have to supply something like 50 million barrels a day in 2050 of fuels,” he said. “That’s still a monster market.”

Carbon Engineering’s chief executive, added that direct-air-capture synthetics have an advantage over traditional fossil fuels: They won’t have to spend a dime on exploration

our plants, you can build it right in the middle of California, wherever you have air and water.” He told me that the company’s first large-scale facility should be up and running by 2022, and will turn out at least 500 barrels a day of fuel feedstock — the raw material sent to refineries.

Climeworks recently joined a consortium of European countries to produce synthetic methane that will be used by a local trucking fleet. With different tweaks and refinements, the process could be adapted for diesel, gasoline, jet fuel — or it could be piped directly to local neighborhoods as fuel for home furnaces.

the new fuels are not necessarily cheaper. Carbon Engineering aspires to deliver its product at an ultimate retail price of about $1 per liter, or $3.75 per gallon. What would make the product competitive are regulations in California that now require fuel sellers to produce fuels of lower “carbon intensity.” To date this has meant blending gas and diesel with biofuels like ethanol, but it could soon mean carbon-capture synthetics too.

Since they’re made from airborne CO₂ and hydrogen and could be manufactured just about anywhere, they could rearrange the geopolitical order — tempering the power of a handful of countries that now control natural-gas and oil markets.

From an environmental standpoint, air-capture fuels are not a utopian solution. Such fuels are carbon neutral, not carbon negative. They can’t take CO₂ from our industrial past and put it back into the earth

Even so, these fuels could present an enormous improvement. Transportation — currently the most significant source of emissions by sector in the United States — could cease to be a net emitter of CO₂

“If you can do one carbon-capture facility, where Carbon Engineering or Climeworks can build a big plant, great. You need to do that 5,000 times. And to capture a million tons of CO₂ with direct air capture, you need a small power plant just to run that facility. So if you’re going to build one direct-air-capture facility every day for the next 30 years to get to some of these scenarios, then in addition, we have to build a new mini power plant every day as well.

It’s also the case that you have to address two extraordinary problems at the same time, Peters added. “To reach 1.5 degrees, we need to halve emissions every decade,” he said. That would mean persuading entire nations, like China and the United States, to switch from burning coal to using renewables at precisely the same time that we make immense investments in negative-emission technologies.

this would need to be done even as governments choose among competing priorities:

“The idea of bringing direct air capture up to 10 billion tons by the middle or later part of the century is such a herculean task it would require an industrial scale-up the likes of which the world has never seen,”

Pacala wasn’t pessimistic about making a start. He seemed to think it was necessary for the federal government to begin with significant research and investments in the technology — to see how far and fast it could move forward, so that it’s ready as soon as possible

Gebald and Wurzbacher seemed to regard the climate challenge in mathematical terms. How many gigatons needed to be removed? How much would it cost per ton? How many Climeworks machines were required? Even if the figures were enormous, even if they appeared impossible, to see the future their way was to redefine the problem, to move away from the narrative of loss, to forget the multiplying stories of dying reefs and threatened coastlines — and to begin to imagine other possibilities.

It’s worth noting that the original version of the Green New Deal was devised by the left-leaning British National Economic Foundation, as a means for recovery after the 2008 economic collapse

Once Labour’s full, staggeringly bold proposals were unveiled, support for the party soared

Labour climbed a full 20 points in the six weeks of the 2017 campaign, robbing the Tories of a majority in the Parliament

So it seems to me there is a massive opportunity for the left now across the Western world. Look at how popular a 70 percent top rate is … in America! The left is correct to sense a huge opportunity and they are right, I think, to be bold.

I wrote about Jeremy Corbyn’s Labour last year in these pages, and that, under his leadership, “it turned out to be difficult to propel a new movement of left radicalism without simultaneously tapping into a vein of left extremism,” and that seems to me to be precisely the challenge in the U.S. as well

the full package from the contemporary radicalized left in both the U.K. and U.S. brings with it far more troubling ideas

If they insist on calling our multicultural and multiracial democracy a manifestation of “white supremacy,” they will empower real white supremacists.

A passion for social justice curdles into attacks on free speech

Postmodern critical gender theory denies any meaningful natural differences between men and women, and casts an entire sex as inherently problematic

Concern about mass immigration is dismissed as nothing but racism and xenophobia.

so Labour, after so much promise and success, has not been able to get any sustainable polling lead over the most shambolic Tory government in memory.

If the Democrats want to fight the next election on the need for a radical rebalancing of the economy in favor of the middle and working class, for massive investment in new green technology, for higher taxes on the superrich, and for health-care security for all Americans, they can win

If they conflate those goals with extremist rhetoric about abolishing everyone’s current health insurance, and starting from scratch, as the Green New Deal advises, not so much

If they insist that men and women are indistinguishable, that girls can have penises and boys can have periods, as transgender ideology now demands, they’ll seem nuts to most fair-minded people.

Hostility to the policies of the state of Israel — a perfectly legitimate position — morphs swiftly into ugly anti-Semitic tropes

It’s not easy to find any heroes in Washington these days, so allow me to eulogize one. Walter Jones was a longtime Republican congressman from North Carolina, who died earlier this wee

Are they really capable of fucking this up once again? The answer that is emerging in the first months of the new Democratic House is: of course they can.

If they call a border wall an “immorality” and refuse to fund a way to detain and humanely house the huge surge of migrant families and children now overwhelming the southern border (up 290 percent over the same period in 2018, with a record 1,800 apprehensions on Monday of this week alone!), they will rightly be called in favor of open borders

I’m haunted all the time by the knowledge of what my lifetime will have witnessed. Humans are committing countless species to death; we are destroying the life of our oceans and skies; we are changing the planet’s ecosystem more quickly than at any time since the asteroids wiped out the dinosaurs. From the perspective of life itself, we are conducting a holocaust of the natural world. How is the knowledge of this not traumatizing?

A new report from the Institute for Public Policy Research notes, according to the BBC, that “since 1950, the number of floods across the world has increased by 15 times, extreme temperature events by 20 times, and wildfires seven-fold.”

Last week, research emerged showing that the insect biomass is declining by 2.5 percent a year, which means that we may wipe out the entire insect population within a century — and lose a quarter of it in the next ten years.

This amounts to what Jill Kieldash describes as the “actual structural and functional collapse of the natural systems which have supported life on Earth for the last 400 million years.”

I don’t know how this paradigm affects you every day, but it is for me the gutting context for everything, a growing nausea laced with guilt and shame.

In a century, we will have destroyed this Earth as we have known it — in absolutely full awareness of what we are doing. It’s the greatest crime humanity has ever committed

One answer could be that they are behaving in a classic way when a catastrophe strikes: They’re traumatized by this knowledge, and they cope with this trauma by a classic form of disassociation. In fact, we are all living through this collective trauma

Once we become aware of its true scope, depth, and accelerating pace, we then begin to view everything else through the traumatic lens of the climate crisis

How could anyone with a reasonably realistic, educated worldview not be haunted by the perpetual specter of Climate Trauma when considering fundamental life and identity choices?

I am not surprised by declining birth rates in the West. Having a child in today’s era means initiating another human being into the end of the world as we have known it

I find my own witnessing of the collapse of liberal democratic values in the West inseparable from the mass extinction of life on Earth our civilization has wrought — and the double depression this creates makes me want to escape

this collective trauma is never-ending. It’s a 9/11 all the time. Woodbury notes the similarity between our knowledge of future planetary collapse and a diagnosis of a terminal disease: “You may put it out of your mind for spells, but the grief associated with prospective loss comes at you in waves.

The challenge is to resist disassociation — which is “the human capacity to mentally escape an insufferable reality.

We are disassociating from America in our current dystopian politics. But we are also, more profoundly, disassociating ourselves from our deepest ecological reality: that we are killing what created us. And we cannot seem to stop.

we may be underestimating what the constant drumbeat of news about the accelerating sixth great extinction has been doing to us psychologically.

when it became clear that the Iraq War had been based on phony intelligence, he actually changed his mind. More than that: He took moral responsibility for his vote for the war, and rethought a great deal of his previous views. Ashamed of what he had done — and the lives lost because of the war — he went on to write 12,000 letters to family members of service members killed

he tirelessly fought to bring back war-making powers to the Senate, where they belong. He took on his own party leadership in demanding votes before military adventures

He was that very rare creature: a true Republican fiscal conservative

Of course a man of this character was a dogged defender of his own constituents, especially those in the military subjected to unfairness or injustice of any kin

This didn’t make him a liberal. It made him a conservative. And he proved that to be a conservative these days — a humane, decent, honest, principled conservative — you really have no place in the Republican Party

he obtains some consolation by peering into the abyss, entertaining the worst-case scenarios of 6 to 8 degrees Celsius of warming. Given the prospect of utter annihilation, he says, the “degraded muddle” that we might still manage to eke out should count “as an encouraging future.” It would be “merely grim, rather than apocalyptic.”

The overarching frame for Wallace-Wells’s book is an analogous call to action: “How much will we do to stall disaster, and how quickly?”

“The climate system that raised us, and raised everything we now know as human culture and civilization, is now, like a parent, dead,”

“It is about what warming means to the way we live on this planet.” He warns of collapsing ice sheets, water scarcity, an equatorial band too hot to be livable and — for anyone fortunate enough to reside elsewhere — extreme heat waves that will burn longer and kill more. All this could come with 2 degrees Celsius of warming — the threshold that world leaders pledged to stay below in the Paris accords of 2015.

There is no single way to best tell the story of climate change, no single rhetorical approach likely to work on a given audience, and none too dangerous to try,” Wallace-Wells writes. “Any story that sticks is a good one.”

He describes himself as a Bitcoin-buying, non-recycling city-dweller who hates camping. He was scared out of his “fatally complacent, and willfully deluded” inertia when he became immersed in the awful truth and, his book suggests, you can be too

it’s not as if any of the hair-raising material with which he has become intimately familiar has paralyzed him with fatalism — quite the opposite. “That we know global warming is our doing should be a comfort, not a cause for despair,” he writes. What some activists have called “toxic knowledge” — all the intricate feedback loops of societal collapse — “should be empowering.”

even while staring down the bleak decades ahead, Wallace-Wells had a child. “She will watch the world doing battle with a genuinely existential threat,” he writes. “She will be living it — quite literally the greatest story ever told. It may well bring a happy ending.

Mobilization is impossible for people who are sleepwalking their way toward disaster; and mobilization is necessary, he says, to deploy the tools at our disposal, which include carbon taxes, carbon capture and green energy.

His New York magazine article already synthesized plenty of information about perilous climate risks and scared the bejeezus out of people; what are we supposed to do with this expanded litany of horrors?

detail the possible future that awaits the planet should we continue to add carbon to the atmosphere and fail to arrest global warming. Floods, pestilence, famines, wildfires: What he calls the “elements of climate chaos” are veritably biblical in scope

“The Uninhabitable Earth,” David Wallace-Wells

Dr Hörst is hopeful that her team's work will be helpful in ruling out erroneous organic signatures, yet she notes that the results do show exoplanets may be capable of creating the building blocks for life.

If farmers must grow twice as much food to feed the 10 billion, following the ecosystem-conserving rules of Sir Albert Howard ties their hands.

Prophets smite their brows at this logic. To their minds, evaluating farm systems wholly in terms of calories per acre is folly. It doesn’t include the sort of costs identified by Vogt: fertilizer runoff, watershed degradation, soil erosion and compaction, and pesticide and antibiotic overuse.

To Borlaugians, farming is a kind of useful drudgery that should be eased and reduced as much as possible to maximize individual liberty. To Vogtians, agriculture is about maintaining a set of communities, ecological and human, that have cradled life since the first agricultural revolution, 10,000-plus years ago. It can be drudgery, but it is also work that reinforces the human connection to the Earth. The two arguments are like skew lines, not on the same plane.

The use of renewable energy sources is doubling every 5.4 years; continuing that rate of growth is a key strategy to phase out the use of fossil fuels and achieve full decarbonization of the economy by 2050, according to Rockström.